I Radhika is an Indian dance choreographer who works predominately in the Tamil, Telugu, Hindi, Kannada, and Malayalam movies. She is best known for her choreography in films such as Mugamoodi (2012), Nandeesha (2012), and Mariyan (2013). Since her childhood, I Radhika had a significant interest in dancing. She is a trained classical dancer. Radhika was a student of Master Udupi Lakshmi Rai. At 12, she completed her onstage performance of Indian classical dance. Both her parents are from the film industry, so she decided to follow a dance choreography career.

I Radhika mother, P.S. Sethalakshmi, is an actress who has worked alongside actors like M. N. Nambiar. She is married to a musician who works with composer Illaiyaraja. They have a son. I Radhika has worked under many acclaimed choreographers such as Master Mugur Sundar, Prabhu Deva, ‎Raju Sundaram, and Tara. In 2011, she worked as a dancer in the movie Avan Ivan directed by Bala. Radhika's performance on the songs gathered audiences' attention. Director Mysskin discovered Radhika's talent and provided her an opportunity to choreograph the entire album of the movie Mugamoodi released in 2012.

She worked with actors including Rajinikanth, Dhanush, and Sarath Kumar. Between the year 2013-2015, Radhika worked close to 100 as a dance choreographer. To get more opportunities, she had to learn western dancing. It was difficult for her to change the dancing style. With the help of Master Shambathu Raju, who is also her family friend, she learned the form. Radhika spent a lot of time practicing the folk style of dance to choreograph for the songs of the movie Tara Thappattai. During her initial days, she used to be a background dancer. Radhika, because of her dark complexions, used to put in the last row of backup. She worked with Master Raju Sundaram, known for his strict selection of a background dancer.

He liked Radhika's energy and put her in the first row of them. She was one dancer in the movie Pokkiri directed by Prabhu Deva. When the Radhika could not pull off a dance movement, Prabhu Deva did her practice over 2 hours without a break until she perfected the step. Radhika started a dance academy, which as of 2015, had around 300 members. The academy trained students who wanted to attend music examinations at Trinity College, London. She believes in hard work and urges, people to not drop their dreams because of their complexions.